It is an axial flow agitator that operates at high speed and is used for low viscous liquids. The propeller agitator is a stirrer that forces the liquid toward the walls and bottom of the pond. Operates at high and medium speeds (200 -1450 rpm). The smaller agitators rotate at full engine speed, about 1150 or 1750 rpm; the larger ones rotate from 400 to 800 rpm.
Flow streams leaving the agitator move through the liquid in a given direction until they are diverted by the bottom or walls of the tank.
The column of swirls of liquid of high turbulence that part of the agitator, drags in its movement to the stagnant liquid, generating an effect considerably greater than that which would be obtained by means of an equivalent column created by a stationary nozzle. The propeller blades cut or rub vigorously the liquid.
Due to the persistence of flow currents, propeller agitators are effective in large tanks. They are used for immiscible liquids, preparation of highly concentrated solutions, syrups, brines, emulsions.